He prefers wireless headphones for convenience.

他为了方便更喜欢使用无线的耳机。

You can listen to music hands-free with these wireless headphones.

你可以用这些无线耳机免提的听音乐。

High performance over-ear wireless headphones with Bluetooth up to 8 hours playback.

支持蓝牙的高性能耳罩式无线耳机，提供长达8小时的播放。

Wireless headphones? NASA. Tech to ensure clean drinking water? ESA. Safe land mine removal? ESA & NASA.

无线耳机？NASA发明的。清洁饮用水的技术？ESA发明的。安全清除地雷？ESA和NASA发明的。

I recently bought a set of wireless headphones, and thought they looked cool … but the sound quality was naff and I looked like a Martian.

我最近买了无线耳机，觉得它们看起来很酷…但音质很破，而且我戴上它们看起来像一个火星人。（H：怎么会呢？